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Marine sinkhole From Wikipedia, the free encyclopedia
The Tablas Island Blue Hole is an underwater sinkhole located off northeast Tablas Island below the Gorda Point Lighthouse, a historic lighthouse located about 248 kilometers (154 mi) southeast of Manila in Barangay Cawayan, San Agustin, Romblon, Philippines.
Tablas Island Blue Hole | |
---|---|
Location | Just off northwest Gorda Point in northeastern Tablas, below the Gorda Point Lighthouse |
Coordinates | 12.6608098°N 122.1518°E |
Depth | 30 m (98 ft) |
Elevation | Entrance is about 5 m (16 ft) deep |
It is a vertical chimney about 8 metres (26 ft) in diameter,[1] and is the only known blue hole in the Philippines. With an entrance in shallow water, it is possible to free-dive into the top part of the hole.[2] The bottom of the hole is at a depth of about 30 meters.[3]
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